Monday, May 14, 2012

Dyno run with new GT head

This has been a long time coming but has been well worth the wait.After waiting for Ken Bryants car to arrive from Bristol last year with a shiney GT cylinder head in the boot I have taken ages getting it fitted and running it up on the Dyno at Tim Slako's.

The graph below shows the back to back test using the new head versus the last run I did in late 2011 where I got 123rwhp. I now have 146rwhp which by any standard isn't a bad improvement for just a head swap - especially considering the old head that came off was "flowed" and had 37.75 and 31.25mm Witor valves.

Estimate flywheel bhp and torque 175bhp @ 5300 and 190lb/ft at 4200

We feel that the dyno gives a slightly pessimistic overall rwhp figure but the difference between the two runs is the obvious thing.

Previous heads power output is the fine line.

CR 10.75 - GTT 43 cam for both runs




Old head with witor valves


Gareth Thomas GTT head with 37.2mm inlets and 32.6 mm GT exhaust valves. Inlet flows around 90cfm at 0.400"-0.450" and exhaust about 64cfm (both at 10inches)


Next modification after using the car for a season or so will be to try the GT 572 cam which uses the Le Mans inlet profile and should add some more top end to give around 200 flywheel hp at 6000rpm. I'll probably wait untl I have forged pistons installed before running this cam with the recommended 11.3 CR

5 Comments:

Blogger chenlina said...

chenlina20151204
canada goose
coach factory outlet online
michael kors outlet online
canada goose jackets
prada handbags
air force 1
oakley sunglasses
michael kors outlet clearance
fake oakley sunglasses
michael kors uk
celine handbags
jordan retro 11
michaek kors outlet
jordan concords
air jordans
air max 90
air max uk
abercrombie
coach outlet
canada goose jackets
coach outlet store online
coach factory outlet
louis vuitton handbags
polo ralph lauren outlet
michael kors outlet stores
beats by dre
uggs outlet
uggs for men
coach outlet store online
cheap ugg boots
ed hardy clothing
ugg sale
michael kors handbags
ray ban sunglasses outlet
the north face
mont blanc pens
tiffany and co
uggs sale
cheap jordan shoes
kids lebron shoes
ray ban outlet store
as

December 4, 2015 at 2:00 PM  
Blogger chenlina said...

chenlina20151211
gucci shoes
canada goose jackets
michael kors outlet
polo ralph lauren outlet
jordan retro
ray ban sunglasses outlet
cheap nfl jerseys
cheap air max
ray ban sunglasses outlet
jordan retro 11
jordan 11
michaek kors outlet online
air force 1
coach factory outlet
kids uggs on sale
uggs clearance
instyler max
michael kors outlet
canada goose jackets
p90x
tiffany and co
coach factory outlet
michael kors outlet
louis vuitton outlet
pandora jewelry
oakley sunglasses
coach outlet store online
michael kors outlet
canada goose jackets
lebron shoes
oakley sunglasses
ugg boots for women
air max uk
uggs on sale
oakley sunglasses
michael kors outlet
ugg boots sale
timberland outlet
michael kors handbags
coach outlet
as

December 11, 2015 at 2:08 PM  
Blogger chenlina said...

chenlina20151211
hollister co
michael kors outlet clearance
air jordans
abercrombie
michael kors outlet online
louis vuitton handbags
chanel handbags
michael kors outlet online
kevin durant basketball shoes
hollister co,hollister jeans,hollister.com,hollister ca
ugg boots outlet
abercrombie fitch
kate spade handbags
tory burch outlet
coach outlet store online
adidas originals
running shoes
oakley sunglasses cheap
celine outlet
canada goose outlet
cheap oakley sunglasses
ugg boots on sale
michael kors uk
true religion jeans outlet
coach factory outlet
ugg boots
cheap oakley sunglasses
abercrombie kids
cheap jordans
coach outlet
burberry outlet
louboutin pas cher
louis vuitton
uggs boots
coach outlet store online
prada handbags
replica watches
oakley sunglasses cheap
polo ralph lauren
jordan retro
as

December 11, 2015 at 2:14 PM  
Blogger Unknown said...

zhengjx20160415
coach factorty outlet online
gucci belts
basketball shoes
coach outlet
michael kors
louis vuitton handbags
celine bags
cheap toms
adidas originals store
jordan concords
nike air max uk
jordan 3 retro
louis vuitton bags
montblanc pens
replica rolex watches
coach outlet
louis vuitton purses
ed hardy outlet
michael kors handbags
ray bans
cheap oakley sunglasses
pandora charms
fitflop shoes
kate spade outlet
nike free uk
michael kors outlet clearance
coach outlet
michael kors outlet clearance
hollister clearance
gucci bags
gucci handbags
ray ban sunglasses outlet
jordan retro 8
cheap air jordans
jordan 3s
christian louboutin sale
kobe shoes
cheap nfl jerseys
louis vuitton purses
michael kors outlet clearance

April 15, 2016 at 4:42 PM  
Blogger Unknown said...

www0706
oakley sunglasses
nike air max
ubiq shoes
gucci outlet
jerseys from china
kate spade outlet
marc jacobs outlet
coach outlet
cheap jordans
nike air max 90


July 7, 2018 at 9:36 AM  

Post a Comment

<< Home